31st January 2024

A 19-year-old male with a history of sickle cell anaemia came to A&E complaining of pain and swelling in his right hand.

A 19-year-old male with a history of sickle cell anaemia came to A&E complaining of pain and swelling in his right hand. He states that it has been present since his last admission with a sickle cell crisis 2 months ago when he received intravenous fluids. He feels as though his right hand is cooler, and he has noticed a tremor. The rest of his arm is unremarkable. Past medical history includes a previous sickle chest crisis and a shoulder dislocation 6 years ago. 

Which of the following is the most likely cause of CRPS in this case?

Select the SINGLE most appropriate option from the list below. Select ONE option only.